This is a MacBook Pro Retina 1st Generation, but I know of people with non-retina MacBooks and the same chip, having the same problem.
2) The workaround requires downgrading the kernel, pinning of the old driver version, will break things like overlayfs etc. I don't think a click-for-click tutorial is useful here. Someone not knowing what's going on will inevitably mess up his Ubuntu installation with this anyways. For advanced users/developers, I think the current instructions are good enough.
3) No, b43 doesn't work for this chip either. I does detect the chip, but again only 2.4GHz and very slow data rates and connection drops.
Hi Christoper,
1) Here is the requested output of a not working setup, that is, no 5GHz WiFi and slow/unstable 2.4GHz Wifi:
mzanetti@noneyet ~ $ lspci -vvnn | grep -A 9 Network
Capabilities: <access denied>
04:00.0 Network controller [0280]: Broadcom Corporation BCM4331 802.11a/b/g/n [14e4:4331] (rev 02)
Subsystem: Apple Inc. AirPort Extreme [106b:00ef]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 256 bytes
Interrupt: pin A routed to IRQ 17
Region 0: Memory at c1900000 (64-bit, non-prefetchable) [size=16K]
Kernel driver in use: wl
mzanetti@noneyet ~ $ apt-cache policy bcmwl-kernel-source source: 248+bdcom- 0ubuntu1 248+bdcom- 0ubuntu1 248+bdcom- 0ubuntu1 0 archive. ubuntu. com/ubuntu/ utopic/restricted amd64 Packages dpkg/status 88Z.00EE. B02.1208081132 manufacturer
bcmwl-kernel-
Installed: 6.30.223.
Candidate: 6.30.223.
Version table:
*** 6.30.223.
500 http://
100 /var/lib/
mzanetti@noneyet ~ $ sudo dmidecode -s bios-version
MBP101.
mzanetti@noneyet ~ $ sudo dmidecode -s bios-release-date
08/08/2012
mzanetti@noneyet ~ $ sudo dmidecode -s system-version
1.0
mzanetti@noneyet ~ $ sudo dmidecode -s baseboard-
Apple Inc.
This is a MacBook Pro Retina 1st Generation, but I know of people with non-retina MacBooks and the same chip, having the same problem.
2) The workaround requires downgrading the kernel, pinning of the old driver version, will break things like overlayfs etc. I don't think a click-for-click tutorial is useful here. Someone not knowing what's going on will inevitably mess up his Ubuntu installation with this anyways. For advanced users/developers, I think the current instructions are good enough.
3) No, b43 doesn't work for this chip either. I does detect the chip, but again only 2.4GHz and very slow data rates and connection drops.